There is a lack of studies that provide models or equations capable of predicting starter feed intake (SFI) for milk-fed dairy calves. Therefore, a multi-study analysis was conducted to identify variables that influence SFI, and to develop equations to predict SFI in milk-fed dairy calves up to 64 days of age. The database was composed of individual data of 176 calves from eight experiments, totaling 6426 daily...
The objective of the current study was to assess the use of nonlinear mixed model methodology to fit the growth curves (weight v. time) of two dairy goat genotypes (Alpine, +A and Saanen, +S). The nonlinear functions evaluated included Brody, Von Bertalanffy, Richards, Logistic and Gompertz. The growth curve adjustment was performed using two steps. First, random effects u1, u2 and u3 were linked to the asympto...
Two trials were conducted to evaluate how calcium oxide (CaO) as an additive in sugar cane silage affects animal performance and diet digestibility. Experiment 1 included 35 crossbred steers (Holstein × Nellore) with an average body weight (BW) of 350 ± 18.3 kg, which were distributed across a randomized block design with five treatments and seven replicates. The five treatments consisted of sugar cane ensiled ...
Realizou-se um estudo com quatro novilhos cruzados Holandês x Nelore (225±22kg de peso vivo), canulados no rúmen e abomaso, distribuídos em quadrado latino 4 x 4 para avaliar o efeito de diferentes proporções de silagem de Braquiária brizantha e silagem de sorgo sobre o consumo e a digestibilidade dos nutrientes no trato digestório total e parcial, sobre os parâmetros ruminais e sobre a eficiência microbiana. A...
These experiments were carried out to evaluate, using in vitro and in situ techniques, the effects of three inclusion levels of calcium oxide (0, 5, and 10 g/kg of sugarcane fresh matter) and four exposure times (0, 24, 48, and 72 h) of sugarcane to calcium oxide on the chemical composition and digestive kinetic parameters of sugarcane. The treatments were arranged in a 3 by 4 factorial design. Freshly-cut suga...
Made available in DSpace on 2018-11-26T15:45:15Z (GMT). No. of bitstreams: 0 Previous issue date: 2017-08-01; Univ Nevada, Reno, NV 89557 USA; Texas A&M Univ, College Stn, TX USA; Univ Estadual Paulista, Dept Anim Sci, Jaboticabal, SP, Brazil; Univ Estadual Paulista, Dept Anim Sci, Jaboticabal, SP, Brazil
Made available in DSpace on 2018-11-27T16:41:26Z (GMT). No. of bitstreams: 0 Previous issue date: 2016-06-01; The objective of this study is to provide approaches to determine mature weight of female and intact and castrated male Saanen goats using body composition data. Our database combined 7 comparative slaughter studies and comprised 244 individual records of body composition of intact male (n = 94), female...
Made available in DSpace on 2018-11-27T21:47:43Z (GMT). No. of bitstreams: 0 Previous issue date: 2016-08-01; Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP); These experiments estimated Ca, P, Mg, K, and Na requirements of intact male, castrated male, and female Saanen goats. Two experiments were performed: one to determine the net macromineral requirements for maintenance (Exp. 1) and another to...
Avaliaram-se, em esquema factorial 2x2, o efeito das silagens de dois híbridos de milho (A: Agromen - AGN35-A42; B:Bayer - A3663) e dois níveis de concentrado (25 e 50%) sobre o desempenho animal. Para avaliar o consumo, a digestibilidade e o desempenho animal, utilizaram-se 24 novilhos cruzados, Holandês x Zebu, com média de peso de 335±30kg, distribuídos em seis blocos ao acaso. Os tratamentos consistiram em ...
The objective was to determine digestible fraction values of several tropical forages used in ruminant diets in the tropics through in vivo digestion in order to estimate the metabolizable energy (ME) content of these forages using several methods and predictive equations, and to assess the relationship between in situ neutral detergent fibre (NDF) degradability and in vivo NDF digestibility. In the experiment,...