In New Zealand (NZ) herd testing is done for milk, fat, protein and somatic cell count (SCC). Currently, routine genetic evaluation is done for milk, fat and protein yields but not for SCC. A new system has been developed to calculate SCC breeding values (BVs) for the dairy industry. The current evaluation of milk, fat and protein involves combining herd test results to predict a 270-day yield ...

Abstract The aim of this research communication was to examine the effect dietary supplementation with wheat-based dried distillers’ grains solubles (DDGS), a by-product bioethanol production, on yield, composition, and fatty acid (FA) profile ewe milk. Forty-five purebred mid-lactating Chios ewes (average milk yield 2.23 kg/d in 96 ± 5 d lactation) were offered three iso-nitrogenous iso-energe...

The objectives were to determine the effect of administering recombinant bovine ST (bST) every 14 d on milk yield and milk composition in dairy ewes and to assess the possible effects of treatment on milk yield loss that occurs at lamb weaning. Seventy-two lactating dairy ewes were separated into 4 groups at lambing, and each group received no bST (control) or 40, 80, or 120 mg of bST every 14 ...

BACKGROUND: Methionine has been suggested as the firstlimitingamino acid for milk production in ruminants. It is importanthow to increase milk protein yield and milk fat in dairy ruminants.OBJECTIVES: This study was set to investigate the effect of rumenprotected methionine (RPMet) on milk composition of lactatingCashmere Rayeni goats. METHODS: 40 healthy singletonCashmere Rayeni goats about 3 ...

The use of a solvent-extraction process that removes corn oil from distillers grains produces a reduced-fat co-product (RFDG). To determine the optimal concentration of RFDG in mid-lactation diets, 22 multiparous and 19 primiparous Holstein cows were used in a completely randomized design for 8 wk, including a 2-wk covariate period. The RFDG was included at 0, 10, 20, and 30% of the diet on a d...

This experiment was performed to investigate whether feeding xylose-treated soybean meal (XSBM) or corn gluten meal (CGM) is economically better under field conditions. Ninety-four multiparous early lactating Holstein cows (55±5 days in milk and 2.82±0.41 body condition score) were used in a completely randomized design. Cows were randomly assigned to one of two treatments: XSBM or CGM as the m...

1. In two experiments measurements were made of food intake, live-weight change, milk yield and milk composition in early lactation when dairy cows were given diets containing varying proportions of protein as fish meal (low rumen degradability) or as groundnut meal (high rumen degradability). In a preliminary trial measurements were also made with cows given supplements of either fish meal or ...

To examine whether total fat intake is actually lower in reduced-fat (low-fat and skim) milk drinkers and whether reduced-fat-milk drinkers compensate for energy intake we compared the intakes of foods, energy, and energy-yielding nutrients in reduced-fat-milk drinkers and whole milk drinkers by using the US Department of Agriculture's 1989-1991 nationwide food intake database, the Continuing S...

Fat supplements based on palmitic acid (PA) or stearic (SA) are expected to have different effects milk production and nutrient metabolism in lactating dairy cows. In this study, the of prilled fat containing levels PA SA were tested 12 high-producing multiparous cows (pretrial yield = 53.4 ± 8.7 kg/d; mean SD) arranged a 4 × Latin square design with 21-d periods. Treatments control (CON; no su...

background and objectives: the effect of the different proteins and polysaccharides on the characteristics of low-fat cheese has been a topic of recent study. the release of aromatic compounds from the cheese is affected by the addition of texture improvers. the present study investigated the addition of polysaccharides and proteins on the hardness, microstructure and ester release of low-fat b...