The research was carried out to evaluate the lactation curves of Nellore and Crossbred F1 Limousin-Nellore (LN) and Simmental-Nellore (SN) cows and the performance of the progeny. Thirteen cows from each breed group, with age ranging from 5 to 9 years, and the respective calves were used. From 15 days after calving until weaning of the calves (210 days), the cows and calves were kept in individual pens. The nutritional requirements of the cows for maintenance and lactation were met. […]

With the objective to establish the nutritional requirement of lysine for light and semi-heavy laying hens, in the period from 34 to 50 weeks old, 360 laying hens (half Lohmann and half Lohmann Brown) were submitted to a basal ration containing 2.850 kcal ME/kg, 15.0% CP, supplemented with five levels (0.00, 0.05, 0.10, 0.15 and 0.20%) of L-lysine, to provide 0.584, 0.634, 0.684, 0.734, and 0.784% of digestible lysine in the rations. A 5 x 2 (lysine level and laying […]

A trial was conduced to evaluate the effect partial or total substitution of blood plasma for hydrolyzed of intestinal mucosa of swine (HI) in diets of pigs from 21 to 49 days of age. A total of 140 piglets weaned at 21.7 ± 2.9 days of age with average weight of 5.54 ± 0.65 kg were allotted to a randomized experimental block design, with five treatments, seven replications of four animals per experimental unit. The experiment was divided in the […]

The intake and the total and partial digestibility of nutrients, the microbial efficiency, the nitrogen balance, the passage rates of ruminal digesta, the pH and the ammonia ruminal concentration in beef cattle fed diets containing tifton 85 haylage and sorghum silage in the following proportions: 100:0; 68:32; 34:66 and 0:100, respectively in DM basis. Four crossed animals (H × Z) fistulated in the rumen and abomasum, with average body weight of 364 kg were assigned to a 4 × 4 […]

Seventy and six lactating crossbred sows of medium genetic potential with initial weight of 207.0 ± 32.0 kg and reproductive cycles order of 3.53 ± 2.11 were used to evaluate digestible threonine levels in the lactation phase. The animals were allotted to a randomized blocks experimental design with four treatments (0.589, 0.627, 0.665, and 0.703% of digestible threonine) and nineteen replications, in which each experimental unit was onsisted by a female. There was no effect of digestible threonine levels on […]

This work evaluated the herbicides selectivity acetolactate synthase inhibitors and photosynthetic II applied in post- emergency in palisadegrass (Brachiaria brizantha cv. Marandu) and signalgrass (Brachiaria decumbens cv. Basilisk) plants in field conditions and their effect in seed quality. Treatments tested in g ha-1 were: imazethapyr at 100, chlorimuron-ethyl at 15, nicosulfuron at 50, bentazon at 720, atrazine at 3.000, and control plot. Two field trials were set up on complete randomized block design with four replicates; laboratory studies were carried […]

This work measured lamb performance in a ryegrass pasture (Lolium multiflorum Lam.) under different grazing intensities and methods. The pasture was used from July 12th to November 1st of 2003 (total of 113 days). The treatments were two grazing intensities (moderate and low) in rotational and continuous stocking. The moderate and low grazing intensities were represented, respectively, by forage allowance of 2.5 and 5 fold the intake potential. It was used a factorial arrangement (2 intensities × 2 methods × […]

This study was carried out to evaluate the requirements of digestible threonine in diets of gilts from 15 to 30kg, maintained in thermoneutral environment. Seventy crossbreed gilts with an initial weight of 15.1 ± 0.4 kg were used in a randomized blocks design, with five treatments (levels of digestible threonine), seven replicates and two animals per experimental unity. The treatments corresponded to the levels of 0.54, 0.58, 0.61, 0.65, e 0.698% of digestible threonine. Digestible threonine levels in the diet […]

This work aimed to compare cultivars of Lotus corniculatus L. (cv. São Gabriel, cv. ARS2620) and L. uliginosus Schkuhr (cv. Maku) through the morphological development analysis. The plants were cultivated in pots and they were harvested at 90, 120, 150, 180, and 210 days after seeding being evaluated by linear, weight, volume, area, and count measurements. Data were submitted to regression analysis as a function of growth days. Cultivars had the same temporal trend for height, root volume, and shoot […]

The experiment was carried out from December/2002 to April/2003 and aimed to evaluate the effects of two phosphorus sources (ordinary superphosphate + triple superphosphate and Yoorinâ magnesium thermophosphate), as a function of days (24) and evaluation period (summer and autumn) on leaf appearance interval (LAPI), leaf elongation rate (LER), leaf senescence (TLS), first and last ligule height (FLH; LLH), number of expanded leaves (NEL), number of leaves in expansion (NLE), total number of leaves (TNL), total number of live leaves […]