SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

Hodgkinson,Suzanne M; Matus,Felipe; Lopez,Ignacio F.

In the semi-extensive farming systems that are used to raise European wild boar in countries such as Chile, the behavior of the animals in paddocks has not been studied and is important for managing the system. The objective of the present study was to determine the proportion of time that grazing wild boar spent on different activities and the distribution of these activities during the day. The study was conducted in paddocks containing Cynodon dactylon, Lolium perenne and Poa pratensis. A total of 35 purebred European wild boars with a liveweight (average + SEM) of 37.4 + 1.11 kg with noserings were used in the study. The animals were in the paddocks from 08:30 h until 16:30 h, after which they had free access to a commercial diet for one hour and were...

Tipo: Journal article

Palavras-chave: Behavior observations; Behavior patterns; European wild boar; Grazing.

Ano: 2013

URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000100017

Ingestive behavior of steers on pastures of Brachiaria brizantha and Cynodon dactylon

Zanine,Anderson de M; Vieira,Bruno R; Ferreira,Daniele de J; Vieira,Antônio J. M; Silveira,Márcia C. T. da; Siva,Wilton L. da; Cecon,Paulo R.

An experiment was carried out to assess the performance of steers on Brachiaria brizantha and Cynodon dactylon cv. Coast cross pastures by the continuous stocking method with a variable stocking rate. A completely randomized experimental design was used with two pastures representing the treatments, each containing 10 replicates. The results of t-tests demonstrated that the steers grazed for less time (7:19 h) on the B. brizantha grass pasture than the on Coast-cross grass pasture (8:13 h). There was no difference in rumination time from 6:46 and 6:89 h for the B. brizantha and Coast-cross pastures, respectively. There was a significant difference for the values regarding the time that the steers remained idle, and the animals were more frequently idle on...

Tipo: Journal article

Palavras-chave: Cattle; Ethology; Grazing; Idleness.

Ano: 2016

URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202016000200012

Effect of feeding and housing systems on rumen properties and plasma metabolite stress indicators in autochthonous Spanish Ojalada sheep

Seasonal and annual changes in the quality of native rangeland selected by grazing steers in northern Mexico

Miguel,José A; Calvo,José L; Ciria,Jesús; Asenjo,Begoña.

To rear lambs of the Ojalada breed, fed exclusively on mothers' milk until 5 weeks, three feeding systems were compared: a) ewes kept indoors and fed chopped straw plus concentrate (IND+CH+C), total mixed ration (TMR); b) ewes kept indoors and fed whole straw in the form of large bales plus concentrate (IND+W+C), TMR; and c) free-range grazing plus concentrate (GR+C; control group). Parameters related to ruminal fermentation (pH, NH3-N concentration and proportion of volatile fatty acids (VFAs)) in 40 sheep during a production cycle were monitored. The plasma concentrations of stress-related metabolites (i.e., glucose, lactate, phosphate, creatine kinase (CK), cortisol and non-esterified fatty acids (NEFAs)) during a production cycle and in 10 sheep during...

Tipo: Journal article

Palavras-chave: Barley straw; Ewe; Grazing; Local Spanish breed.

Ano: 2015

URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202015000100007

Reyes,Osvaldo; Murillo,Manuel; Herrera,Esperanza; Carrete,Francisco O.

The objective of this study was to determine and compare seasonally the chemical composition, in vitro gas production, in situ degradability and ruminal fermentation of the diet selected by cattle grazing on native rangeland over two years. Diet samples were collected from four esophageal fistulated steers (350 ± 3 kg BW), and four ruminally fistulated steers (342 ± 1.5 kg BW) were used to evaluate degradation and ruminal fermentation. Data were analyzed using a repeated measurements design. The crude protein (CP), in vitro dry matter digestibility (IVDMD) and metabolizable energy (ME) were higher in 2008 (P≤0.01) and in the summer (P≤0.05). The volatile fatty acids (VFA) and propionate concentrations were affected by season and year...

Tipo: Journal article

Palavras-chave: Cattle; Grazing; In vitro gas production; In situ degradation; Ruminal fermentation.

Ano: 2016

URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202016000200003

Behavioral aspects of Santa Inês sheep kept in pasture in a tropical rainforest climate

Manno,Maria Cristina; Rodrigues,Luiz Fernando de Souza; Lima,Kedson Raul de Souza; Carvalhal,Monique Valéria de Lima; Rodrigues Filho,Silas Santiago; Costa,Gleyce Lopes da; Monteiro,Ailime Nayara Gomes; Barreto,Andrea do Nascimento.

ABSTRACT: This study aimed to evaluate behavioral aspects of Santa Inês sheep in pasture in humid tropical climate. In order to do so, nine Santa Inês sheep were kept on pasture, exposed to the climate directly, without shade, for 24 days, with 12 alternate days in each period (dry and raining) in 2015. The behavioral parameters evaluated were: food consumption, standing idleness, lying idle and rumination. Observations occurred from 08:00 A.M. to 05:55 P.M. The experimental was a completely randomized design (CRD) with two treatments (rainy season and dry period), nine replications, one animal per experimental unit. To understand the correlations of the behavioral parameters with the climatic variables, Pearson’s correlation was performed. Approximate...

Vegetation composition and forage mass in grassland with a double structure under two winter grazing regimes

Palavras-chave: Dry season; Raining season; Grazing.

Ano: 2019

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000100651

Coelho,André Alfredo; Trindade,José Pedro Pereira; Volk,Leandro Bochi da Silva; Pinheiro,Clodoaldo Leites; Quadros,Fernando Luiz Ferreira de.

ABSTRACT: Remnant areas of Pampas grassland have a distinct double structure. Efficiency of livestock farming on these grasslands depends on practices that are synchronized with natural variation. This study examined the changes in vegetation composition and forage mass during winter to understand the effects of grazing methods in a natural pasture with a double structure that was grazed by heifers. An experimental area in the municipality of Bagé, Rio Grande do Sul, was subjected to continuous or rotational grazing treatments, with two replicates each. Frequency of the structural composition and forage mass of the lower stratum and animal weight was measured at the beginning and end of the experimental period (June 7 to October 7, 2016, respectively)....

Corn supplementation on milk urea nitrogen content of dairy cows grazing on temperate annual pasture

Palavras-chave: Forage allowance; Grazing; Heifers; Native grassland.

Ano: 2018

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000600651

Dall-Orsoletta,Aline Cristina; Almeida,João Gabriel Rossini; Oziemblowski,Márcia Maria; Ribeiro-Filho,Henrique Mendonça Nunes.

ABSTRACT: The excretion of urinary nitrogen (N), one of the most important environmental contaminants from livestock systems, is highly correlated with milk urea N content. The objective of this research was to evaluate the use of different types of corn supplementation on milk urea N in grazing dairy cows. Twelve Holstein × Jersey lactating dairy cows were divided into six uniform groups according to milk production, lactation stage and live weight. Treatments were compared according to a 3 × 3 replicated Latin square experimental design, with three periods of seventeen days (twelve days to adaptation and five to measurements). The experimental treatments were exclusively grazing (G); grazing + supplementation with 4.2 kg DM of corn silage (CS) and...

Chemical composition and fatty acid profile in meat from grazing lamb diets supplemented with ryegrass hay, fishmeal and soya bean meal as PUFA sources

Palavras-chave: Nitrogen excretion; Ground corn; Corn silage; Grazing.

Ano: 2020

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000200650

Romero-Bernal,Jose; Almaraz,Ernesto Morales; Ortega,Octavio Alonso Castelán; Salas,Nazario Pescador; González-Ronquillo,Manuel.

ABSTRACT: This study examined the characteristics of the fatty acids profile in the meat of lambs fed grazing and supplemented with different PUFA sources. Thirty Suffolk lambs were used (37.2±5.4kg BW), grazing on perennial ryegrass (Lolium perenne) (12h d-1) and supplemented (30g kg-1 BW0.75) with ryegrass hay (RGH), or supplements formulated with fishmeal (FHM) or soybean meal (SBM). Lambs were used in a completely randomized design. Results showed an effect on total SFA, with SBM higher than RGH (P=0.033), and SBM and FHM showing higher MUFA content compared with RGH (P=0.001). Total PUFA content was higher for RGH, followed by FHM and with the lowest content for SBM (P=0.001). Concluding that there is a variation in fatty acid content depending on the...

Performance of holsteins cows in pasture of Cynodon dactylon cv. Coast-cross supplemented with concentrate

Palavras-chave: Lambs; Grazing; Fatty acids; Meat; PUFA.

Ano: 2017

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000400655

Ciência e Agrotecnologia

Cardoso,Rodrigo Carvalho; Paiva,Paulo César de Aguiar; Vilela,Duarte.

The work was developed in the experimental station of Embrapa Gado de Leite (Dairy Cattle Embrapa), in Coronel Pacheco, in Zona da Mata Region of Minas Gerais, with the purpose of evaluating the productive performance of Holstein cows kept on 'Coast-cross' (Cynodon dactylon (L.) Pears) pasture, fertilized, strategically irrigated and where the cows were daily supplemented with 3 or 6 kg of concentrate/cow/day. The data were collected during three years (October/2000 to October/2003), involving 108 lactations. An experimental randomized block design with two replicate areas per treatment was adopted, with nine animals per area and eighteen animals per treatment being utilized, with fixed stocking rate of five cows/ha. The system of grazing, under rotated...