The effect of dam’s parity on the first lactation performance of dairy heifers

1986 ◽  
Vol 1986 ◽  
pp. 102-102
Author(s):  
S. J. Furniss ◽  
A. Stroud ◽  
H. Barrington ◽  
S. P. J. Kirby ◽  
J. P. Wray ◽  
...  
Keyword(s):  
Market Value ◽  
Breeding Programme ◽  
Lactation Performance ◽  
Beef Breed ◽  
Genetic Merit ◽  
Dairy Heifers ◽  
Beef Bull ◽  
Dairy Bulls ◽  
First Time ◽  
Genetic Index

Whether they are planning to calve for the first time at two or three years old Many farmers choose to serve their maiden dairy heifers (animals not previously served, (M. A. F. F. 1985)) with a beef breed recognised for giving easier calvings .Often the heifer breeding programme is not well supervised and it is a matter of convienience to use a resident beef bull.There are however,considerable advantages to serving heifers with dairy bulls including an increased number of heifer calves for selection or the ability to serve older, nature cows (animals that have commenced at least their first lactation (M. A. F. F. 1985))with a continental beef breed giving large calves of higher market value. Because heifers tend to be calved as a group they provide a batch of calves which can be concentrated upon, easing management and improving control over performance.If heifers are served by bulls of as higher genetic merit as would normally be used on cows then increased genetic turnover will raise the genetic index in the younger dam which should be reflected in her daughter’s performance.

The effect of the 2018 Giro d’Italia on Israel’s tourism firm value

2019 ◽  
Vol 25 (7) ◽  
pp. 1070-1083 ◽  
Author(s):  
Juan Luis Nicolau ◽  
Abhinav Sharma ◽  
Tal Zarankin
Keyword(s):  
Conceptual Model ◽  
Firm Value ◽  
Market Value ◽  
The Impact ◽  
First Time

On September 18, 2017, the organizers of the 2018 Giro d’Italia announced that for the first time in its history, this world famous event would begin outside of Europe—in Israel. This article contributes to the literature by taking advantage of this unique opportunity of analysis; in particular, it tests the effect that this announcement had upon Israeli tourism companies’ market value. The results show that on the very same day the announcement was made, there was an increment in the firm value of these companies. We propose a conceptual model and argue that the hype generated helps enhance the country’s image, leading to higher expectations of incoming tourism. This article presents a contribution to the growing evidence regarding the impact of such announcements upon actual market value of tourism companies.

scholarly journals First Results from Insemination With Sex-Sorted Semen in Dairy Heifers in Macedonia

2015 ◽  
Vol 38 (1) ◽  
pp. 107-111
Author(s):  
Ljupche Kochoski ◽  
Zoran Filipov ◽  
Ilcho Joshevski ◽  
Stevche Ilievski ◽  
Filip Davkov
Keyword(s):  
Pregnancy Rate ◽  
Transrectal Ultrasound ◽  
Gestation Length ◽  
Dairy Heifers ◽  
Holstein Friesian ◽  
First Results ◽  
Long Time ◽  
The Usa ◽  
Normal Gestation ◽  
First Time

Abstract Science has been searching for a long time for a reliable method for controlling the sex of mammalian offspring. Recently, the application of specific modern cellular methodologies has led to the development of a flow cytometric system capable of differentiating and separating living X- and Y-chromosome-bearing sperm cells in amounts suitable for AI and therefore, commercialization of this sexing technology. The aim of this work was to present the first results of heifers that introduce bovine AI with sex sorted semen, for the first time in Macedonia. Insemination with sex sorted cryopreserved semen (2×106 spermatozoa per dose) imported from the USA was done at two dairy farms in ZK Pelagonija. In total, 74 heifers (Holstein Friesian) were inseminated. Inseminations were carried out in a timely manner following a modified OvSynch protocol. During the insemination, the sperm was deposited into the uterine horn ipsi lateral to the ovary where a follicle larger than 1.6 cm was detected by means of transrectal ultrasound examination. Pregnancy was checked by ultrasound on day 30 after the insemination. Overall, the average pregnancy rate in both farms was 43,24% (40,54% and 45,95%, for farm 1 and farm 2, respectively). All pregnant heifers delivered their calves following a normal gestation length (274,3 days in average) and of the 32 born calves, 30 (93,75%) were female. In conclusion, since the first results from inseminations with sex-sorted semen in dairy heifers in Macedonia are very promising, the introduction of this technique may bring much benefit to the local dairy sector. Average pregnancy rate seems similar with results obtained following ‘regular’ inseminations, notwithstanding the relatively low number of spermatozoa per insemination dose. Due to the latter, we however recommend inseminations only to be carried out by experienced technicians followinga TAI protocol and ultrasound examinations of the ovaries prior to insemination.

The effects of plane of nutrition and diet type on lactogenic hormone levels, growth and milk production in high genetic merit dairy heifers

1998 ◽  
Vol 1998 ◽  
pp. 198-198
Author(s):  
A.F. Carson ◽  
F.J. Gordon ◽  
A.R.G. Wylie ◽  
J.E. McEvoy
Keyword(s):  
Milk Production ◽  
Growth Rates ◽  
Genetic Merit ◽  
Hormone Levels ◽  
Dairy Heifers ◽  
Lactogenic Hormone ◽  
Nutrition And Diet ◽  
Diet Type

To develop appropriate rearing regimes for high genetic merit dairy heifers, information is required on the effect of growth rates and diet type within the various stages of die animal’s life on performance. The aims of this study were to investigate (1) the effects of plane of nutrition and diet type during the pre-pubertal period on lactogenic hormone levels and (2) the effects of plane of nutrition during die post-pubertal period on lactogenic hormone levels, growth and milk production.

scholarly journals Impact of Extraction Process in Non-Compliant ‘Bravo de Esmolfe’ Apples towards the Development of Natural Antioxidant Extracts

2021 ◽  
Vol 11 (13) ◽  
pp. 5916
Author(s):  
Ana A. Vilas-Boas ◽  
Ana Oliveira ◽  
Tânia B. Ribeiro ◽  
Sónia Ribeiro ◽  
Catarina Nunes ◽  
...  
Keyword(s):  
Value Added ◽  
Market Value ◽  
Extraction Process ◽  
Natural Antioxidant ◽  
Ultrasound Assisted Extraction ◽  
Microwave Assisted ◽  
Assisted Extraction ◽  
Traditional Cultivars ◽  
Ultrasound Assisted ◽  
First Time

The ‘Bravo de Esmolfe’ apple (BE) is rich in antioxidants and represents one of the most important traditional cultivars in Portugal. A large amount of non-compliant BE, with no market value, it is generated every year. Thus, an effort to find value-added solutions is of utmost importance. For the first time, green extraction (microwave-assisted-extraction (MAE) and ultrasound-assisted-extraction (UAE)) were compared against conventional extraction (with (CET) and without temperature (CE)) to select the most efficient process to produce a natural antioxidant extract from non-compliant BE. The results showed that MAE and CET are good methodologies for developing a BE antioxidant extract. However, MAE is more sustainable than CET, requiring less time to reach high temperatures. The MAE-extract showed great antioxidant activity (14.80 ± 0.70 mg TE/g DE by ORAC, 3.92 ± 0.25 mg AAE/g DE by ABTS, and 5.11 ± 0.13 mg TE/g DE by DPPH). This extract revealed high amount of chlorogenic acid (0.48 ± 0.07 mg/g DE), (-)-epicatechin (0.30 ± 0.02 mg/g DE) and phloridzin (0.13 ± 0.01 mg/g DE). This study shows that non-compliant BE is a useful source of antioxidants, being a sustainable way for the recovery of value-added compounds from the rejected fruit in line with sustainable and circular bioeconomy principles.

scholarly journals The influence of the beef bull breed on carcass weight and yield of male offspring

2013 ◽  
Vol 29 (2) ◽  
pp. 251-257
Author(s):  
R. Petraskienė ◽  
N. Peciulaitienė ◽  
V. Jukna ◽  
E. Meskinytė-Kausilienė ◽  
J. Klementaviciūtė ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Carcass Traits ◽  
Carcass Characteristics ◽  
Male Offspring ◽  
Carcass Weight ◽  
Beef Breed ◽  
Male Sex ◽  
Beef Bull ◽  
The Right

The aim of this study was to investigate of beef breeds - Hereford (HE), Charolais (CH) Limousine (LI), Simmental (SM), Belgian Blue (BB) and Salers (SA) - of the bulls, which are used for dairy cows and heifers insemination, influence on male sex offspring carcass weight and yield. In this article, for analysis were used of all in 7 months in one slaughterhouse slaughtered bulls 12-30 months of age data. Of these 689 crossbreeds, whose cow was dairy and bull was beef breed. For this study was used only crossbreeds (689 bulls) data. This is the thirty-six (36) bull offspring from 546 farms. Bulls were divided into groups according to age during slaughter (12-18 months, 18-24 months, 24-30 months). Studies have shown, that the father's breed at different growth periods had a different effect on carcass traits of crossbreeds. Therefore, the crossbreeding use on purpose to improve dairy breeds offspring carcass characteristics, it is necessary to carefully choose the right breed for crossbreeding, bearing in mind, what age of the offspring will be slaughtered.

Observations on mammary development in calves and lambs

1953 ◽  
Vol 43 (4) ◽  
pp. 413-421 ◽  
Author(s):  
C. Wallace
Keyword(s):  
Experimental Treatment ◽  
Mammary Development ◽  
Prolonged Treatment ◽  
Mammary Tissue ◽  
Striking Difference ◽  
Oestrogen Treatment ◽  
Beef Breed ◽  
Beef Calves ◽  
Dairy Heifers ◽  
Gland Tissue

The normal course of mammary development has been briefly described, in sheep from 2 months of foetal age to 4 months after birth; and in dairy cattle from the 3-month foetus to calves 6 months old. Observations were also made on a series of udders from ewes during their first pregnancy. A small group of beef calves and a number of freemartins of various ages were also examined.Development was found to be closely similar in the two species, and in both, sex differences were marked.Experimentally it was found that in males of either species castration at birth had little effect on mammary growth, while prolonged treatment with oestrogen gave rise to enlarged teats, dilated cisterns and ducts, and to a certain amount of secretion. Little gland tissue was formed in oestrogen-treated males, and there was no increase in the spreading of mammary tissue from the neighbourhood of the teat.Females of the two species showed a striking difference in their response to experimental treatment. In sheep, removal of the ovaries at birth had no apparent effect on mammary development up to 4 months, while treatment with oestrogen stimulated gland formation in both spayed and intact lambs and also restricted the normal spread of mammary tissue into the udder. In cattle, on the other hand, heifers spayed at birth showed almost complete cessation of mammary development, while implants of oestrogen, in addition to inducing gland formation, promoted the spreading of tissue into the udder pad of the spayed animal.Udder development of freemartins appeared to be similar to that of normal heifers from 5 months foetal age to about a month after birth, but thereafter was more like that of a spayed animal. Removal of the abnormal gonads shortly after birth had no effect, while oestrogen treatment induced development of teats, ducts and glands exactly as in a normal heifer.Comparing small numbers of calves of the two types, it was found that heifers of the beef breed in general showed slightly poorer mammary development than dairy heifers that had been treated in the same way, with more connective tissue and numerous leucocytes in the mammary zone.

Sign in / Sign up

Export Citation Format

Share Document