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Correlations between production and economic variables in dairy cows on a tropical pasture Animal Sciences
Figueiredo, Cibelle Borges; Santana Júnior, Hermógenes Almeida de; Bezerra, Leilson Rocha; Mendes, Fabrício Bacelar Lima; Cardoso-Santana, Elizângela Oliveira; Abreu Filho, George.
The objective of this study was to evaluate correlations between production and economic variables of lactating cows on a tropical pasture. The experiment involved ten ¾ Holstein × ¼ Dairy Gyr cows in the middle third of lactation at an average age of 70 ± 4.6 months and an average body weight of 400 ± 55.2 kg. Cows were supplemented with a concentrate feed with different supplement compositions aiming to promote alterations in the animal performance and economic responses. Data were analyzed statistically by Pearson correlations at the 0.95 probability level. No correlations were observed for fat and total solids with economic variables (p > 0.05). Milk yield was positively correlated with (p < 0.05), but had no correlation with FC or MRR (p >...
Tipo: Info:eu-repo/semantics/article Palavras-chave: 5.04.05.00-4 composition; Interaction; Milk; Pasture; Relationship; Ruminant..
Ano: 2018 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/39737
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Whole scrapings of cassava root in diets for broilers from 1 to 21 days of age Animal Sciences
Ferreira, Antônio Hosmylton Carvalho; Lopes, João Batista; Abreu, Márvio Lobão Teixeira de; Santana Júnior, Hermógenes Almeida de; Araújo, Fernando Silva; Saraiva, Alysson.
The study was conducted to evaluate the effect of including whole cassava root scrapings (WCS) in diets of broilers on performance and the metabolizability of dry matter, crude protein, and gross energy and on nitrogenous balance. Four hundred female and 100 male broilers from Ross strain were used in the performance and metabolism studies, respectively. In both studies, broilers were allotted in completely randomized block design with five treatments and four replicates. The experimental unit was represented for twenty birds per box for performance study and five birds per metabolic cage for metabolism study. The treatments consisted of diets containing 0, 5, 10, 15, and 20% WCS inclusion. Up to 5.1% WCS can be included in the diet of broilers from 1 to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: 5.04.03.02-8 crude protein; Metabolizability; Performance.
Ano: 2014 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/23368
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