Influence of Feeding Dehydrated Poultry Waste on Composition and Organoleptic Quality of Milk1

1977 ◽  
Vol 40 (1) ◽  
pp. 29-31 ◽  
Author(s):  
J. C. BRUHN ◽  
G. D. REIF ◽  
H. TOONE ◽  
J. H. EVANS
Keyword(s):  
Dairy Cows ◽  
Milk Quality ◽  
Poultry Waste ◽  
Quality Factors ◽  
Lactating Dairy Cows ◽  
Period 2 ◽  
Lead Zinc ◽  
Copper Lead ◽  
Composite Samples

A double reversal trial with three, 4-week periods was used to determine the effect on milk quality of feeding dehydrated poultry waste to lactating dairy cows. Fifteen cows were fed a control ration for 4 weeks (Period 1), followed by an experimental ration containing dehydrated poultry waste for 4 weeks (Period 2), and then by the control ration for 4 weeks (Period 3). Milk was collected daily and scored by five judges using the ADSA milk flavor scoring guide. Milk compsition (fat, protein, lactose, and solids-not-fat) was determined on alternate days. During Periods 2 and 3 weekly composite samples were collected to determine concentrations of cadmium, copper, lead, zinc, and tocopherol. No significant differences were found in any of the milk quality factors studied.

scholarly journals Evaluation of milk quality from dairy cows fed maize (Zea mays) stover treated with chopped and mineralized groundnut (Arachis hypogea) and soybean (Glycine max) stover

2022 ◽  
Vol 13 (1) ◽  
pp. 102-114
Author(s):  
Chisowa DM ◽  
Mpofu, I DT ◽  
Daura MT ◽  
Syampaku EM
Keyword(s):  
Dairy Cows ◽  
Milk Fat ◽  
Nutritive Value ◽  
Milk Quality ◽  
Arachis Hypogea ◽  
Protein Levels ◽  
Lactating Dairy Cows ◽  
Density Values ◽  
Feeding Trials

This study evaluated the effect of upgrading the quality of maize stover (MS) on milk nutritive value. The study involved feeding MS improved using urea (U), chopped groundnut stover (cGS), chopped soybean stover (cSS), mineralized groundnut stover solution (mGS) and mineralized soybean stover solution (mSS) to lactating dairy cows. The feeding trial involved twelve (12) dairy cows in their second parity. Effect of supplementation with MS improved with U, cGS, cSS, mGS and mSS on milk quality was evaluated following on-station feeding trials. The study involved 22 factorial experiments within a Completely Randomised Design (CRD). Milk samples were analysed for protein, lactose, fat and solid not fat (SNF). Mean milk protein levels ranged from 3.52mg/ml to 3,73mg/ml (s.e=0.03) for milk from cows fed on MS improved using cGS and mGS respectively. Protein and Lactose were observed to be the least variable (3.64g/ml ±0.12, and 5.24g ±0.24 respectively). Average milk fat content was highest (4.78%, se=0.52) in milk from cows fed on UET treated MS and lowest (3.43%, se=0.52) in milk from cows fed on gGS protein based MS. Within legume type milk fat was higher(4.75%±1.99) in milk from cows fed on MS blended with mGS than that in milk from cows fed on MS improved with cGS (3.43%±1.99). Similar result was observed in milk fat from cows fed on MS improved with the use of soybean. Lactose in milk from cows fed on UET treated MS was highest (5.51g, se=0.061) and lowest (5.10g, se=0.061) in milk from cows fed on MS blended with cGS. Milk from cows fed on MS improved with mGS was higher (9.61p/cwt, se=0.14) in SNF and lowest (8.88p/cwt, se=0.14) in milk from cows fed on MS with cGS. The milk density values ranged from 32.65sg, se=0.53 for milk from cows fed on UET treated MS to 30.42sg, se=0.053 for milk from cows fed on MS blended with cGS. Milk components were higher when cows were fed on MS improved using mineralized legume stover solutions.

scholarly journals Effects of different amounts of crude glycerol supplementation on dry matter intake, milk yield, and milk quality of lactating dairy cows grazing on a Kikuyu grass pasture

2021 ◽  
Vol 12 (4) ◽  
pp. 491-497
Author(s):  
Diana Marcela Valencia E ◽  
Luis Alfonso Giraldo ◽  
Alejandra Marin ◽  
Yury Tatiana Granja Salcedo ◽  
Telma Teresinha Berchielli
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Dry Matter ◽  
Crude Glycerol ◽  
Milk Quality ◽  
Dry Matter Intake ◽  
Lactating Dairy Cows ◽  
Kikuyu Grass

scholarly journals Reduced progesterone concentration during growth of the first follicular wave affects embryo quality but has no effect on embryo survival post transfer in lactating dairy cows

Reproduction ◽  
2011 ◽  
Vol 141 (3) ◽  
pp. 333-342 ◽  
Author(s):  
Fernando A Rivera ◽  
Luís G D Mendonça ◽  
Gláucio Lopes ◽  
José E P Santos ◽  
Rolando V Perez ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Estrous Cycle ◽  
Embryo Quality ◽  
Post Partum ◽  
Embryo Survival ◽  
Follicular Wave ◽  
Lactating Dairy Cows ◽  
Prostaglandin F ◽  
Donor Cows

Fertility of lactating dairy cows is associated with reduced progesterone (P4) concentration compared with nonlactating animals. The objective of the current study was to determine whether P4 during growth of the first follicular wave (FFW) affects embryo quality. Lactating Holstein cows at 33±3 days post partum were allocated to one of three treatments. Cows in the FFW and FFW with P4 (FFWP) treatments started the superstimulation protocol on day 1 of the estrous cycle and second follicular wave (SFW) cows started the superstimulation protocol on estrous cycle day 7. Cows were superstimulated with 400 mg of NIH-FSH-P1 (FSH) given twice daily for 5 days, two prostaglandin F2α (PGF2α) injections given with the ninth and tenth injections of FSH, GNRH given 48 h after the first PGF2α injection, and timed insemination 12 and 24 h after the GNRH injection. Cows in the FFWP treatment received two intravaginal P4 inserts during the superstimulation. Embryos were recovered 6.5 days after artificial insemination and excellent/good and fair embryos were frozen and transferred. Blood was sampled daily from estrous cycle day 0 until insemination from donor cows. During the superstimulation protocol, P4 was (P<0.01) greatest for SFW cows followed by FFWP and FFW cows respectively. The percentage of embryos–oocytes from SFW and FFWP cows classified as excellent/good and fair embryos was (P=0.02) greater than those of FFW cows. Pregnancy per embryo transfer was not (P≥0.73) affected by embryo donor treatment. Reduced embryo quality of cows induced to ovulate the follicles from the first follicular wave is a consequence of reduced P4 during follicle growth.

Effect of timing of urea feeding on the yield and quality of embryos in lactating dairy cows

2002 ◽  
Vol 58 (8) ◽  
pp. 1443-1455 ◽  
Author(s):  
P.M Dawuda ◽  
R.J Scaramuzzi ◽  
H.J Leese ◽  
C.J Hall ◽  
A.R Peters ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Yield And Quality ◽  
Lactating Dairy Cows

scholarly journals Nutritional and Keeping Quality of Total Mixed Ration Briquettes Produced for Lactating Dairy Cows

2021 ◽  
Vol 3 (1) ◽  
pp. 46
Author(s):  
R. H. W. M. Karunanayaka ◽  
W. A. D. Nayananjalie ◽  
S. C. Somasiri ◽  
A. M. J. B. Adikari ◽  
W. V. V. R. Weerasingha ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Total Mixed Ration ◽  
Lactating Dairy Cows ◽  
Keeping Quality

scholarly journals Pasture silage in New Zealand - targets and current practice

1995 ◽  
pp. 157-160
Author(s):  
Sw Howse ◽  
P. Isherwood ◽  
D.B. Miller ◽  
J.L. Well ◽  
C.M. Riddick ◽  
...  
Keyword(s):  
New Zealand ◽  
Dairy Cows ◽  
High Quality ◽  
Nitrogen Fertiliser ◽  
Lactating Dairy Cows ◽  
Feed Analysis ◽  
Supplementary Feed ◽  
National Information ◽  
Lincoln University

Pasture silage is harvested from surplus spring pasture on many New Zealand dairy farms, for use as a supplementary feed in times of feed shortage. Targets for the quality of silage suitable for feeding to lactating dairy cows are presented, as recommended by a silage workshop held in Hamilton in 1994. National information from the Lincoln University Analytical Laboratory are presented that show that pasture silage made in the 1994J95 season was well preserved. However, most of that silage had a feed quality below the target set for lactating dairy cows. Averages for DM digestibility were 65.5-67.9%, estimated M/D was 9.3-9.6 MJ ME/kg DM, and crude protein was 14.6 15.1%. Silage-making practices were analysed, based on silage samples entered in the 1994195 Livestock Improvement Advisory silage competition. The key to making high quality pasture silage in the 1994/95 season was to harvest pasture by the first week in November. Nitrogen fertiliser may be used to produce early surplus pasture without restricting the feed supply to grazing cows. Further survey work is planned to confirm observations made, and expand on practical recommendations for making high quality pasture silage. Keywords: dairying, feed analysis, nitrogen fertiliser, pasture, silage, silage additives

scholarly journals Effect of feeding extruded flaxseed on milk quality of dairy cows

2011 ◽  
Vol 27 (3) ◽  
pp. 329-334
Author(s):  
G. Biagi ◽  
M. Fustini ◽  
G. Canestrari ◽  
A. Palmonari ◽  
N. Panciroli ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Dairy Cows ◽  
Milk Yield ◽  
Milk Fat ◽  
Vaccenic Acid ◽  
Milk Quality ◽  
Adaptation Period ◽  
Omega 3 ◽  
Effect Of Feeding

Aim of the present study was to evaluate the effect of feeding dairy cows with extruded flaxseed (EF) on milk quality. After a 7-d adaptation period, 40 Holstein dairy cows in midlactation were divided in two experimental groups, based on parity, milk yield and composition, and days in milk. Animals were fed for 28 d a standard total mixed ration containing or not (control) 1.8 kg/cow/d of a supplement based on extruded flaxseed (EF). Milk yield was recorded daily and individual milk samples were collected weekly for analysis. Milk yield was not affected by treatment and averaged 26.2 kg/d throughout the study. Feeding EF reduced milk fat (3.95 vs. 4.24%; P=0.053) and tended to reduce milk protein (3.32 vs. 3.50%; P=0.104). The milk from cows fed EF contained more (P<0.01) stearic (12.0 vs. 7.8 mg/100 mg of fat), oleic (21.2 vs. 18.0 mg/100 mg of fat), ?-linolenic (0.85 vs. 0.41 mg/100 mg of fat) and vaccenic (1.43 vs. 0.62 mg/100 mg of fat) acids than control and also more c9,t11 CLA (0.91 vs. 0.59 mg/100 mg of fat). Conversely, compared with control, feeding EF reduced milk concentrations of palmitic acid (26.5 vs. 33.4 mg/100 mg of fat; P<0.01). The present results show that feeding EF to dairy cows is an efficient strategy to enrich milk in beneficial fatty acids such as vaccenic acid, CLA and omega-3 fatty acids. Nevertheless, the milk fat reducing effect of flaxseed as well as other sources of polyunsaturated fatty acids should be taken into account.

Effect of date and length of closure and post grazing residual on pasture quality for silage

1998 ◽  
pp. 259-264
Author(s):  
J.M. Mcgrath ◽  
J.W. Penno ◽  
K.L. Davis ◽  
R. Wrenn
Keyword(s):  
Dairy Cows ◽  
Dry Matter ◽  
Nutritional Value ◽  
Farming Systems ◽  
Botanical Composition ◽  
Pasture Quality ◽  
Lactating Dairy Cows ◽  
Metabolisable Energy ◽  
Made In

The nutritional value of pasture silage made in New Zealand is often sub-optimal for lactating dairy cows. As farming systems require more pasture silage to be used in an attempt to increase lactation lengths and milksolids production per cow, the quality of this silage becomes more important. In spring 1995, pastures were closed for silage at weekly intervals from 11 September to 17 October, representing six distinct closure dates, to determine the effect that date and length of closure has on pasture quality. In spring 1997 pastures were grazed to different residuals (1.2- 1.4, 1.8-2.0, 2.1-2.4 and 2.5-2.9 t DM/ha) and then closed for silage to determine the effect that post grazing residual has on pasture quality. In both experiments pasture dry matter (DM) yield and chemical and botanical composition was monitored over the 63 day closure. Pasture closed on 11 or 17 September had higher metabolisable energy (ME) (P

Nutritive value for lactating dairy cows of the pressed herbage remaining after the partial extraction of leaf juice

1981 ◽  
Vol 21 (111) ◽  
pp. 376 ◽  
Author(s):  
CR Stockdale ◽  
KR King ◽  
DR McKenzie
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Nutritive Value ◽  
Protein Extraction ◽  
Significant Loss ◽  
In Vitro Digestibility ◽  
Lactating Dairy Cows ◽  
Partial Extraction

A series of six experiments compared the production of lactating dairy cows eating either fresh herbage or the pressed herbage remaining after the partial extraction of juice. Irrigated perennial pasture and irrigated lucerne (Medicago sativa) were used in different experiments. With forage-harvested pasture, extraction removed an average of 42.1 g of protein per kg dry matter (DM) of pasture processed. An average of 85% of the DM of the original fresh pasture was left as pressed pasture. The process lowered the in vitro digestibility, total nitrogen, and cell contents of the herbage, and raised the cell wall constituents. It also reduced herbage phosphorus, potassium, magnesium and sodium, but increased herbage calcium slightly. The milk yield of cows fed an equivalent DM intake of pressed residue was, on average, 6% lower than the milk yield of cows fed fresh pasture. The responses shown by the milk constituents were inconsistent. With lucerne, extraction removed an average of 95.9 g of protein from each kg of fresh herbage and an average of 74% of the lucerne was left as pressed lucerne. This reduced the quality of the pressed residue as determined by in vitro digestibility (5%), Kjeldahl nitrogen (19%) and neutral detergent fibre (27%). However, there was no significant loss of production for cows on the pressed herbage, although there were small differences. It is concluded that lucerne would appear to have the greater potential for a leaf protein extraction industry in the irrigated areas of the Goulburn Valley of Victoria.

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